------- Comment #8 from pinskia at gmail dot com 2008-09-16 13:29 -------
Subject: Re: [4.4 Regression] ICE using --combine -O2
Sent from my iPhone
On Sep 16, 2008, at 6:20 AM, "rguenth at gcc dot gnu dot org"
<[EMAIL PROTECTED]
> wrote:
>
>
> ------- Comment #7 from rguenth at gcc dot gnu dot org 2008-09-16
> 13:20 -------
> ./cc1 -quiet -O2 t1.i t2.i
> t2.i: In function 'Node_print':
> t2.i:2: error: non-trivial conversion at assignment
> struct _IO_FILE *
> struct _IO_FILE *
> # LOADS: { stderr }
> stderr.0_3 = stderr;
>
> t2.i:2: error: non-trivial conversion at assignment
> struct _IO_FILE *
> struct _IO_FILE *
> # LOADS: { stderr }
> stderr.0_4 = stderr;
>
No those two types should compatible. If they are not then there is a
bug in the middle-end. I think this is why there was the Lang hook in
the first place.
> t2.i:2: internal compiler error: verify_stmts failed
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
>
>
> So we have wrong GIMPLE here. GIGO.
>
> Value numbering stderr.0_3 stmt = stderr.0_3 = stderr;
> Setting value number of stderr.0_3 to stderr.0_3
> ...
> Value numbering stderr.0_4 stmt = stderr.0_4 = stderr;
> Inserting name stderr.0_17 for expression (struct _IO_FILE *) stderr.
> 0_3
> Setting value number of stderr.0_4 to stderr.0_17
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> CC| |rguenth at gcc dot
> gnu dot
> | |org
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
